A researcher is studying mitosis in a novel diploid organism with 2n = 16 chromosomes. During metaphase, a drug is applied that inhibits the separation of sister chromatids but allows the cell to progress through anaphase and telophase. At the end of this aberrant cell division, what is the most likely chromosomal composition of the resulting daughter cells?
Two diploid cells (2n=16) each
One diploid cell (2n=16) and one cell with no chromosomes
One tetraploid cell (4n=32)
Two cells with 8 chromosomes each
Related Questions
Mitosis or the equational division is usually restricted to …A… cells. However, in some lower plants and in some social insects …B… cells also divide by mitosis.
Choose the correct option for A and B from the given options
A B
Haploid; diploid
Haploid; haploid
Diploid; diploid
Diploid; haploid
Choose the correct combination of options to select the correct statement for prophase
I. Chromosomal material condenses to form compact mitotic chromosomes
II. The assembly of mitotic spindle is initiated by the microtubules
III. Cells do not show organelles when viewed under the prophase
IV. The nucleolus or nucleoli degenerate completely
I, II and III
I, II and IV
II, III and IV
I, III and IV
I. Phases of cell cycle are controlled by proteins, …A… and …B…
II. There are two regulatory mechanisms, called …C… which take decision about cell division.
III. The second check point, called …D… is responsible for transition from to M-phase.
Identify A-D to complete the given statements (I-III)
A-cyclins; B-CdKs; C-check points; D-mitotic cyclin (Cm)
A-cyclins; B-check points; C-mitotic cyclin, D-CdKs
A-mitotic cyclin (Cm), B-CdKs; C-check points, D-Cyclin
A-mitotic cyclin (Cm), B-cyclins; C-check points, D-CdKs
Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?
Decondensation from chromosome and reassembly of the nuclear lamina
Transcription from chromosomes and reassembly of the nuclear lamina
Formation of the contractile ring and formation of the phragmoplast
Formation of the contractile ring and transcription from chromosomes
What is not seen during mitosis in somatic cells?
Spindle fibre
Chromosomes movement
Disappearance of nucleolus
Synapsis
Consider the following statements about plant cytokinesis
I. It usually occurs by cell plate method
II. The spindle usually persists during cytokinesis
III. Cell plate grows centrifugally
Which of the statements given above are correct?
I and II
I and III
II and III
I, II and III
I. Chromosomes cluster at opposite spindle poles their identity is lost as discrete elements
II. Nuclear envelope assembles around the chromosome clusters
III. Nucleolus, Golgi complex and ER reform
Above features indicates which phase of mitosis
Anaphase
Telophase
Cytokinesis
S-phase
A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in:
Aneuploidy
Polyploidy
Somaclonal variation
Polyteny
I. Phases of cell cycle are controlled by proteins, …A… and …B…
II. There are two regulatory mechanisms, called …C… which take decision about cell division.
III. The second check point, called …D… is responsible for transition from to M-phase.
Identify A-D to complete the given statements (I-III)
A. Cyclins; B. CDKs; C. Checkpoints and growth factors; D. checkpoint
A. CDKs; B. Cyclins; C. Growth factors and kinases; D. M checkpoint
A. Kinases; B. Cyclins; C. Checkpoints and cyclins; D. checkpoint
A. Cyclins; B. CDKs; C. Mitosis promoting factors; D. S checkpoint
